Drainage and temperature neutralization control system of underground gas storage

Abstract

The invention discloses a drainage and temperature neutralization control system of an underground gas storage. The structure comprises a lining layer and a sealing layer, wherein an outer ring drainage pipe network and an inner ring drainage pipe network are respectively arranged in the lining layer; inlet ends of the outer-ring drainage pipe and the inner-ring drainage pipe are communicated with a first main water pipe, outlet ends of the outer-ring drainage pipe and the inner-ring drainage pipe are communicated with a second main water pipe, and an inlet end of the first main water pipe is communicated with a first valve and a third valve communicated with the atmosphere; a reservoir with a heat preservation effect is arranged in the factory access tunnel, and a first water pump used for being communicated with the inlet end of the first valve is arranged in water of the reservoir; the outlet end of the second main water pipe is communicated with a second water pump, the outlet end of the second water pump is communicated with a second valve and a fourth valve, the outlet end of the fourth valve is arranged in the reservoir water, and the outlet end of the second valve extends to the ground. The anti-seepage drainage requirement of the underground chamber is met, and meanwhile the temperature change amplitude of the reinforced concrete lining and the sealing layer in the operation period is controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of underground energy storage, and in particular to a drainage and temperature neutralization control system for an underground gas storage. Background Art

[0002] Compressed air energy storage, as a large-capacity, long-duration mechanical energy storage technology, can provide multiple auxiliary services such as power supply, peak-shaving and frequency regulation, reactive power regulation, and rotational inertia. It is an excellent choice for grid-side energy storage and has a bright future. Compressed air energy storage technology uses a compressor to compress air to a high-pressure state and seals it in underground caves such as salt caverns and artificial chambers. When discharged, the compressed air drives the turbine to generate electricity. It is a new type of power storage technology with low cost, large capacity, long duration, high efficiency, and flexible layout.

[0003] The buried depth of underground gas storage in compressed air energy storage power stations is usually more than 100m, so groundwater is one of the key issues that must be solved during the construction and operation of the gas storage. In the existing technology, a drainage method combining drainage corridors and drainage curtains is usually adopted, but this drainage method has the following problems:

[0004] First, although this drainage method has a good effect, it is less economical and takes a long time to complete;

[0005] Second, the compressed air energy storage power station is cyclically charged and discharged during operation. According to the ideal gas state equation pV=nRT, a sudden change in gas pressure under equal volume conditions will cause a sudden change in air temperature, and the temperature change is large, which will cause the temperature of the sealing layer and lining structure of the underground gas storage to change, resulting in a decrease in the strength of the sealing material and lining under the action of temperature load cycles. The drainage method combining drainage corridor + drainage hole curtain cannot change the decrease in the strength of the sealing material and lining. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention proposes a drainage and temperature neutralization control system for an underground gas storage, which can not only meet the requirements of anti-seepage drainage of underground chambers, reduce project costs, and shorten construction period; but also control the temperature variation range of reinforced concrete lining and sealing layer during operation, and effectively reduce the influence of temperature load on the strength of lining structure and sealing layer.

[0007] To achieve the above-mentioned purpose, the present invention is a drainage and temperature neutralization control system for an underground gas storage, comprising a lining layer attached to the inside of the surrounding rock excavation contour line, a sealing layer is arranged inside the lining layer, and the special features thereof are: an outer circle drainage pipe network and an inner circle drainage pipe network are arranged inside the lining layer, the outer circle drainage pipe network is composed of an outer circle drainage pipe wrapped in the outer layer of the lining layer, and is close to the surrounding rock excavation contour line; the inner circle drainage pipe network is composed of an inner circle drainage pipe wrapped in the inner layer of the lining layer, and is close to the sealing layer;

[0008] A plant access tunnel is excavated at the bottom of the underground gas storage reservoir, the inlet ends of the outer circle drainage pipe and the inner circle drainage pipe are connected to a first main water pipe located inside the plant access tunnel, the outlet ends of the outer circle drainage pipe and the inner circle drainage pipe are connected to a second main water pipe located inside the plant access tunnel, and the inlet ends of the first main water pipe are respectively connected to a first valve and a third valve connected to the atmosphere;

[0009] A water reservoir with a heat preservation effect is arranged inside the factory access tunnel, and a first water pump for connecting to the inlet end of the first valve is arranged in the water of the water reservoir; the outlet end of the second main water pipe is connected to the second water pump, and the outlet end of the second water pump is respectively connected to the second valve and the fourth valve, and the outlet end of the fourth valve is placed in the water of the water reservoir, and the outlet end of the second valve extends to the ground;

[0010] When the underground gas storage is in the construction period or maintenance period, the first valve and the fourth valve are closed, the third valve and the second valve are opened, and the seepage water in the outer circle drainage pipe and / or the inner circle drainage pipe is pumped out by the second water pump;

[0011] When the underground gas storage is inflated, the third valve and the second valve are closed, the first valve and the fourth valve are opened, the first water pump pumps the stored water inside the water storage tank to the inlet ends of the outer circle drainage pipe and the inner circle drainage pipe through the first main water pipe, the pumped water absorbs the heat generated by the lining layer and the sealing layer due to the increase in air pressure, the pumped water absorbs heat and heats up to form heated water, and the heated water flows into the water storage tank at the outlet ends of the outer circle drainage pipe and the inner circle drainage pipe through the second main water pipe, the second water pump and the fourth valve;

[0012] When the underground gas storage is in the process of degassing, the third valve and the second valve are closed, and the first valve and the fourth valve are opened. The first water pump pumps the heated water generated during the inflation process in the water storage tank through the first main water pipe to the inlet ends of the outer circle drainage pipe and the inner circle drainage pipe. The pumped water flow continuously replenishes heat to the lining layer and the sealing layer. The heated water dissipates heat to form cooled water. The cooled water flows into the water storage tank through the second main water pipe, the second water pump and the fourth valve at the outlet ends of the outer circle drainage pipe and the inner circle drainage pipe.

[0013] Furthermore, the outer circle drainage pipe and the inner circle drainage pipe are both flower pipes with a diameter of 30 to 50 mm and a wall thickness of 5 to 8 mm.

[0014] Furthermore, the outer circle drainage pipe and the inner circle drainage pipe are both arranged in a spiral mesh belt in a cross-arrangement, and a four-way structure is formed at the intersection.

[0015] Furthermore, the spiral mesh belts of the outer circle drainage pipe are arranged at intervals of 1.5 to 2 m, and the spiral mesh belts of the inner circle drainage pipe are arranged at intervals of 1.5 to 2 m.

[0016] Furthermore, the first main water pipe and the second main water pipe are respectively located on opposite sides of the factory access tunnel, and the first main water pipe is provided with a first temperature transmitter and a first pressure transmitter, and the first temperature transmitter and the first pressure transmitter are respectively used to monitor the water temperature and water pressure of the first main water pipe;

[0017] The second main water pipe is provided with a second temperature transmitter, a second pressure transmitter and a flow switch, and the second temperature transmitter, the second pressure transmitter and the flow switch are used to monitor the water temperature, water pressure and flow of the second main water pipe respectively;

[0018] Whether the outer circle drainage pipe and the inner circle drainage pipe are scaled is determined by monitoring the pressure value variation range of the first pressure transmitter and the second pressure transmitter.

[0019] Furthermore, the water reservoir is located 30 to 50 meters away from the underground gas storage reservoir.

[0020] Furthermore, the water reservoir is also provided with a third temperature transmitter and a liquid level transmitter, and the third temperature transmitter and the liquid level transmitter are used to monitor the water temperature and the water level of the water reservoir respectively.

[0021] Furthermore, a plug is provided at the connection between the underground gas storage and the factory access tunnel, and the inlet ends of the outer circle drainage pipe and the inner circle drainage pipe, as well as the outlet ends of the outer circle drainage pipe and the inner circle drainage pipe are all located inside the plug.

[0022] The advantages of the present invention are:

[0023] 1. When the artificial cavern gas storage in the present invention is not inflated during the construction period or during the maintenance period, the gas pressure in the cavern is close to the local standard atmospheric pressure, which is much lower than the groundwater pressure. The reinforced concrete lining and the sealing material will be subjected to a large external water pressure. At this time, the first valve and the fourth valve are closed, the third valve and the second valve are opened, and the second water pump starts to work to discharge all the seepage water in the inner circle drainage pipe and the outer circle drainage pipe to the outside of the artificial cavern, thereby maintaining the pressure balance inside and outside the artificial cavern and ensuring the structural stability of the artificial cavern;

[0024] 2. In the process of inflating the artificial cavern gas storage reservoir, the gas pressure rises, causing the gas temperature to rise, thereby causing the temperature of the sealing material and the reinforced concrete lining to rise. At this time, the first water pump starts to work, and pumps the water in the water reservoir to the inlet end of the inner circle drainage pipe and the outer circle drainage pipe through the first main water pipe. The pumped water absorbs the heat generated by the increase in air pressure in the artificial cavern gas storage reservoir, and the pumped water absorbs heat and heats up to form heated water. The heated water flows into the water reservoir through the second main water pipe at the outlet end of the inner circle drainage pipe and the outer circle drainage pipe. The present invention pumps circulating water into the inner circle drainage pipe and the outer circle drainage pipe through the first water pump, so as to stably control the temperature of the concrete lining and the sealing material within a reasonable range, thereby reducing the influence of temperature load on the strength of the combined lining structure;

[0025] 3. In the process of deflation of the artificial cavern gas storage reservoir, the sudden drop in gas pressure causes a sudden drop in gas temperature, thereby causing the temperature of the sealing material and the reinforced concrete lining to drop. If no measures are taken, the groundwater in the surrounding rock of the cavern is easy to freeze, and the reinforced concrete lining and the sealing material are easy to be damaged by frost heave. At this time, the heated water generated in the deflation process in the reservoir is pumped to the inlet ends of the inner circle drainage pipe and the outer circle drainage pipe by the first water pump, and heat is continuously added to the reinforced concrete lining and the sealing material during the circulation process. The heated water dissipates heat to form cooling water, and the cooling water flows into the reservoir through the second main water pipe at the outlet ends of the inner circle drainage pipe and the outer circle drainage pipe. The present invention can reduce the temperature drop of the reinforced concrete lining and the sealing material by pumping in the circulating water flow, and stably control the temperature of the concrete lining and the sealing material within a reasonable range, avoid frost heave, and reduce the influence of temperature load on the strength of the combined lining structure;

[0026] 4. Compared with the traditional anti-seepage drainage method of drainage corridor + drainage hole, the present invention adopts flower pipes to form two layers of drainage pipe networks, inner circle drainage pipe network and outer circle drainage pipe network in reinforced concrete lining, without adding additional rock excavation support, which is more economical;

[0027] 5. The construction materials used in the present invention are all common building materials, the construction process is conventional construction process, and the price is relatively low, which has the effect of reducing costs and increasing efficiency;

[0028] The drainage and temperature neutralization control system of the underground gas storage of the present invention adopts flower pipe water diversion and water pump drainage, which can not only meet the requirements of anti-seepage drainage of underground chambers, reduce project costs and shorten construction period; at the same time, circulating water is used to control the temperature change range of reinforced concrete lining and sealing layer during operation, effectively reducing the influence of temperature load on the strength of the combined lining structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A longitudinal cross-sectional view of a drainage and temperature neutralization control system of an underground gas storage of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the outer ring drainage pipe in the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the inner circle drainage pipe in the present invention;

[0032] Figure 4 It is a structural schematic diagram of the cross section of the underground gas storage in the present invention;

[0033] In the figure: surrounding rock excavation outline 1, lining layer 2, sealing layer 3, access tunnel 4, water reservoir 5, plug 6;

[0034] The lining layer 2 includes: an outer circle drainage pipe 2-1 and an inner circle drainage pipe 2-2;

[0035] The factory access tunnel 4 includes: a first main water pipe 4-1, a second main water pipe 4-2, a first valve 4-3, a second valve 4-4, a first temperature transmitter 4-5, a first pressure transmitter 4-6, a second temperature transmitter 4-7, a second pressure transmitter 4-8, a flow switch 4-9, a third valve 4-10, and a fourth valve 4-11;

[0036] The water reservoir 5 includes: a first water pump 5-1, a second water pump 5-2, a third temperature transmitter 5-3, and a liquid level transmitter 5-4. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0039] like Figures 1 to 4 As shown, the present invention provides a drainage and temperature neutralization control system for an underground gas storage reservoir, including a lining layer 2 attached to the inside of a surrounding rock excavation contour line 1, a sealing layer 3 is arranged on the inner side of the lining layer 2, an outer circle drainage network and an inner circle drainage network are arranged inside the lining layer 2, the outer circle drainage network consists of an outer circle drainage pipe 2-1 wrapped in the outer layer of the lining layer 2, and is close to the surrounding rock excavation contour line 1; the inner circle drainage network consists of an inner circle drainage pipe 2-2 wrapped in the inner layer of the lining layer 2, and is close to the sealing layer 3.

[0040] Specifically, the outer circle drainage pipe 2-1 and the inner circle drainage pipe 2-2 are both flower tubes with a diameter of 30 to 50 mm and a wall thickness of 5 to 8 mm.

[0041] Preferably, the outer circle drainage pipe 2-1 and the inner circle drainage pipe 2-2 are both arranged in a spiral mesh belt cross-arrangement, forming a four-way structure at the intersection, and the pipeline is at an angle of 80° to 100°. Specifically, the spiral mesh belts of the outer circle drainage pipe 2-1 are arranged at intervals of 1.5 to 2m, and the spiral mesh belts of the inner circle drainage pipe 2-2 are arranged at intervals of 1.5 to 2m.

[0042] Compared with the traditional anti-seepage drainage method of drainage corridor + drainage hole, the present invention adopts flower pipes to form two layers of drainage pipe networks, namely inner circle drainage pipe network and outer circle drainage pipe network, in the reinforced concrete lining, without adding additional rock excavation support, and is more economical.

[0043] A plant access tunnel 4 is excavated at the bottom of the underground gas storage reservoir, and a plug 6 is provided at the connection between the underground gas storage reservoir and the plant access tunnel 4. The plug 6 is provided with the inlet ends of the outer circle drainage pipe 2-1 and the inner circle drainage pipe 2-2, as well as the outlet ends of the outer circle drainage pipe 2-1 and the inner circle drainage pipe 2-2.

[0044] The inlet ends of the outer circle drainage pipe 2-1 and the inner circle drainage pipe 2-2 are connected to the first main water pipe 4-1 located inside the factory traffic tunnel 4, and the outlet ends of the outer circle drainage pipe 2-1 and the inner circle drainage pipe 2-2 are connected to the second main water pipe 4-2 located inside the factory traffic tunnel 4, and the inlet ends of the first main water pipe 4-1 are respectively connected to the first valve 4-3 and the third valve 4-10 connected to the atmosphere.

[0045] That is to say, the inner circle drainage pipe 2-2 and the outer circle drainage pipe 2-1 are respectively merged into the first main water pipe 4-1 and the second main water pipe 4-2 at both ends of the plug 6.

[0046] A water reservoir 5 with a heat-insulating effect is arranged inside the factory access tunnel 4, and a first water pump 5-1 for connecting to the inlet end of the first valve 4-3 is arranged in the water of the water reservoir 5; the outlet end of the second main water pipe 4-2 is connected to the second water pump 5-2, and the outlet end of the second water pump 5-2 is respectively connected to the second valve 4-4 and the fourth valve 4-11, and the outlet end of the fourth valve 4-11 is placed in the water of the water reservoir 5, and the outlet end of the second valve 4-4 extends to the ground.

[0047] When the underground gas storage is under construction or maintenance, the gas pressure in the chamber is close to the local standard atmospheric pressure, which is much lower than the groundwater pressure. The reinforced concrete lining and sealing materials will be subjected to greater external water pressure. At this time, the first valve 4-3 and the fourth valve 4-11 are closed, and the third valve 4-10 and the second valve 4-4 are opened. The seepage water in the outer circle drainage pipe 2-1 and / or the inner circle drainage pipe 2-2 is pumped out by the second water pump 5-2, thereby reducing or even eliminating the potential possibility of deformation and damage of the lining layer 2 due to external water pressure.

[0048] During the inflation process of the artificial cavern gas storage reservoir, the increase in gas pressure causes the gas temperature to rise, thereby causing the sealing material of the sealing layer 3 and the reinforced concrete lining temperature of the lining layer 2 to rise. At this time, the third valve 4-10 and the second valve 4-4 are closed, the first valve 4-3 and the fourth valve 4-11 are opened, and the first water pump 5-1 starts to work, and the water stored in the water reservoir 5 is pumped to the inlet ends of the inner circle drainage pipe 2-2 and the outer circle drainage pipe 2-1 through the first main water pipe 4-1, and the heat generated by the increase in air pressure in the artificial cavern gas storage reservoir is absorbed by the pumped water flow, and the pumped water flow absorbs heat and heats up to form heated water, which flows into the water reservoir 5 through the second main water pipe 4-2, the second water pump 5-2 and the fourth valve 4-11 at the outlet ends of the inner circle drainage pipe 2-2 and the outer circle drainage pipe 2-1. The present invention pumps circulating water into the inner circle drainage pipe 2-2 and the outer circle drainage pipe 2-1 through the first water pump 5-1, stably controls the temperature of the concrete lining and the sealing material within a reasonable range, and reduces the influence of the temperature load on the strength of the combined lining structure.

[0049] During the deflation process of the artificial cavern gas storage reservoir, the sudden drop in gas pressure causes a sudden drop in gas temperature, thereby causing the temperature of the sealing material of the sealing layer 3 and the reinforced concrete lining of the lining layer 2 to drop. If no measures are taken, the groundwater in the surrounding rock of the cavern is prone to freeze, and the reinforced concrete lining and sealing material are prone to frost expansion. At this time, the third valve 4-10 and the second valve 4-4 are closed, and the first valve 4-3 and the fourth valve 4-11 are opened. The heated water generated during the deflation process in the reservoir 5 is pumped to the inlet ends of the inner circle drainage pipe 2-2 and the outer circle drainage pipe 2-1 through the first water pump 5-1. During the circulation process, heat is continuously added to the reinforced concrete lining and sealing materials. The heated water dissipates heat to form cooled water. The cooled water flows into the reservoir 5 through the second main water pipe 4-2, the second water pump 5-2 and the fourth valve 4-11 at the outlet ends of the inner circle drainage pipe 2-2 and the outer circle drainage pipe 2-1. The present invention can reduce the temperature drop of reinforced concrete lining and sealing materials by pumping in circulating water flow, stably control the temperature of concrete lining and sealing materials within a reasonable range, avoid frost heave, and reduce the influence of temperature load on the strength of combined lining structure.

[0050] Preferably, the first main water pipe 4-1 and the second main water pipe 4-2 are respectively located on opposite sides of the factory access tunnel 4, and the first main water pipe 4-1 is provided with a first temperature transmitter 4-5 and a first pressure transmitter 4-6, and the first temperature transmitter 4-5 and the first pressure transmitter 4-6 are respectively used to monitor the water temperature and water pressure of the first main water pipe 4-1.

[0051] Preferably, the second main water pipe 4-2 is provided with a second temperature transmitter 4-7, a second pressure transmitter 4-8 and a flow switch 4-9, which are respectively used to monitor the water temperature, water pressure and flow rate of the second main water pipe 4-2; and whether the outer circle drainage pipe 2-1 and the inner circle drainage pipe 2-2 are scaled is judged by monitoring the pressure value variation range of the first pressure transmitter 4-6 and the second pressure transmitter 4-8.

[0052] During operation, if the first pressure transmitter 4-6 and the second pressure transmitter 4-8 display a pressure exceeding the normal operating range, it indicates that scale exists in the inner circle drain pipe 2-2 and the outer circle drain pipe 2-1, and the head loss increases. At this time, a descaling agent can be added to the water reservoir 5, and the descaling agent can be pumped to the inner circle drain pipe 2-2 and the outer circle drain pipe 2-1 through the first water pump 5-1, thereby achieving a descaling effect.

[0053] Preferably, the water reservoir 5 is located 30 to 50 meters away from the underground gas storage reservoir.

[0054] During operation, if the first water pump 5-1 fails, the second water pump 5-2 can also serve as a backup water pump for the first water pump 5-1. At this time, the second valve 4-4 and the third valve 4-10 are closed, and the first valve 4-3 and the fourth valve 4-11 are opened. The second water pump 5-2 pumps the water in the water reservoir 5 through the first main water pipe 4-1 to the inlet ends of the inner circle drainage pipe 2-2 and the outer circle drainage pipe 2-1, and then flows out to the water reservoir 5 through the second main water pipe 4-2.

[0055] Preferably, the water reservoir 5 is further provided with a third temperature transmitter 5 - 3 and a liquid level transmitter 5 - 4 , and the third temperature transmitter 5 - 3 and the liquid level transmitter 5 - 4 are used to monitor the water temperature and the water level of the water reservoir 5 , respectively.

[0056] The drainage and temperature neutralization control system of the underground gas storage of the present invention adopts flower pipe water diversion and water pump drainage, which can not only meet the requirements of anti-seepage drainage of underground chambers, reduce project costs and shorten construction period; at the same time, circulating water is used to control the temperature change range of reinforced concrete lining and sealing layer during operation, effectively reducing the influence of temperature load on the strength of the combined lining structure.

[0057] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A drainage and temperature neutralization control system for an underground gas storage, comprising a lining layer (2) attached to the inside of a surrounding rock excavation contour line (1), a sealing layer (3) being arranged inside the lining layer (2), characterized in that: An outer circle drainage pipe network and an inner circle drainage pipe network are respectively arranged inside the lining layer (2); the outer circle drainage pipe network is composed of an outer circle drainage pipe (2-1) wrapped in the outer layer of the lining layer (2) and is close to the surrounding rock excavation contour line (1); the inner circle drainage pipe network is composed of an inner circle drainage pipe (2-2) wrapped in the inner layer of the lining layer (2) and is close to the sealing layer (3); A plant access tunnel (4) is excavated at the bottom of the underground gas storage reservoir; the inlet ends of the outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2) are connected to a first main water pipe (4-1) located inside the plant access tunnel (4); the outlet ends of the outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2) are connected to a second main water pipe (4-2) located inside the plant access tunnel (4); and the inlet ends of the first main water pipe (4-1) are respectively connected to a first valve (4-3) and a third valve (4-10) connected to the atmosphere; A water reservoir (5) with a heat preservation effect is arranged inside the factory access tunnel (4), and a first water pump (5-1) for connecting to the inlet end of the first valve (4-3) is arranged in the water of the water reservoir (5); the outlet end of the second main water pipe (4-2) is connected to the second water pump (5-2), and the outlet end of the second water pump (5-2) is respectively connected to the second valve (4-4) and the fourth valve (4-11), and the outlet end of the fourth valve (4-11) is placed in the water of the water reservoir (5), and the outlet end of the second valve (4-4) extends to the ground; When the underground gas storage is in the construction period or maintenance period, the first valve (4-3) and the fourth valve (4-11) are closed, the third valve (4-10) and the second valve (4-4) are opened, and the seepage water in the outer circle drainage pipe (2-1) and / or the inner circle drainage pipe (2-2) is pumped out by the second water pump (5-2); When the underground gas storage is inflated, the third valve (4-10) and the second valve (4-4) are closed, the first valve (4-3) and the fourth valve (4-11) are opened, and the first water pump (5-1) pumps the water stored in the water reservoir (5) through the first main water pipe (4-1) to the inlet ends of the outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2), and the pumped water absorbs the heat generated by the lining layer (2) and the sealing layer (3) due to the increase in air pressure, and the pumped water absorbs heat and heats up to form heated water, and the heated water flows into the water reservoir (5) through the second main water pipe (4-2), the second water pump (5-2) and the fourth valve (4-11) at the outlet ends of the outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2); When the underground gas storage is in the process of deflation, the third valve (4-10) and the second valve (4-4) are closed, and the first valve (4-3) and the fourth valve (4-11) are opened. The first water pump (5-1) pumps the heated water generated in the process of inflation in the water reservoir (5) to the inlet ends of the outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2) through the first main water pipe (4-1). The pumped water continuously replenishes heat to the lining layer (2) and the sealing layer (3). The heated water dissipates heat to form cooled water. The cooled water flows into the water reservoir (5) through the second main water pipe (4-2), the second water pump (5-2) and the fourth valve (4-11) at the outlet ends of the outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2).

2. The drainage and temperature neutralization control system of the underground gas storage according to claim 1 is characterized in that: The outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2) are both flower tubes with a diameter of 30 to 50 mm and a wall thickness of 5 to 8 mm.

3. The drainage and temperature neutralization control system of the underground gas storage according to claim 2 is characterized in that: The outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2) are both arranged in a spiral mesh belt in a cross-arrangement, and a four-way structure is formed at the intersection.

4. The drainage and temperature neutralization control system of the underground gas storage according to claim 3 is characterized in that: The spiral mesh belts of the outer circle drainage pipe (2-1) are arranged at intervals of 1.5 to 2 m, and the spiral mesh belts of the inner circle drainage pipe (2-2) are arranged at intervals of 1.5 to 2 m.

5. The drainage and temperature neutralization control system of the underground gas storage according to claim 1 is characterized in that: The first main water pipe (4-1) and the second main water pipe (4-2) are respectively located on opposite sides of the factory access tunnel (4); the first main water pipe (4-1) is provided with a first temperature transmitter (4-5) and a first pressure transmitter (4-6); the first temperature transmitter (4-5) and the first pressure transmitter (4-6) are respectively used to monitor the water temperature and water pressure of the first main water pipe (4-1); The second main water pipe (4-2) is provided with a second temperature transmitter (4-7), a second pressure transmitter (4-8) and a flow switch (4-9), and the second temperature transmitter (4-7), the second pressure transmitter (4-8) and the flow switch (4-9) are respectively used to monitor the water temperature, water pressure and flow of the second main water pipe (4-2); Whether the outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2) are scaled is determined by monitoring the pressure value variation range of the first pressure transmitter (4-6) and the second pressure transmitter (4-8).

6. The drainage and temperature neutralization control system of the underground gas storage according to claim 5, characterized in that: The water reservoir (5) is located 30 to 50 meters away from the underground gas storage reservoir.

7. The drainage and temperature neutralization control system of the underground gas storage according to claim 1, characterized in that: The water reservoir (5) is also provided with a third temperature transmitter (5-3) and a liquid level transmitter (5-4), and the third temperature transmitter (5-3) and the liquid level transmitter (5-4) are used to monitor the water temperature and the water level of the water reservoir (5), respectively.

8. The drainage and temperature neutralization control system of the underground gas storage according to claim 1 is characterized in that: A plug (6) is provided at the connection between the underground gas storage and the factory access tunnel (4); the inlet ends of the outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2), as well as the outlet ends of the outer circle drainage pipe (2-1) and the inner circle drainage pipe (2-2) are all located inside the plug (6).

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